The study was divided into two periods, corresponding to
the change in Quebec pediatric priority allocation policy:
group A, January 1, 1997 to August 1, 2004; and group B,
August 2, 2004 to December 31, 2011. Participants were
allocated to group A or group B based on date of first chronic
hemodialysis. Since 1997, all VA procedures have been performed
by the same vascular and transplant surgeon